243241143511 has 4 divisors (see below), whose sum is σ = 243384819832. Its totient is φ = 243097467192.

The previous prime is 243241143491. The next prime is 243241143533. The reversal of 243241143511 is 115341142342.

It is a happy number.

243241143511 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 243241143511 - 2¹⁵ = 243241110743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243241143581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71835621 + ... + 71839006.

It is an arithmetic number, because the mean of its divisors is an integer number (60846204958).

Almost surely, 2^243241143511 is an apocalyptic number.

243241143511 is a deficient number, since it is larger than the sum of its proper divisors (143676321).

243241143511 is a wasteful number, since it uses less digits than its factorization.

243241143511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143676320.

The product of its digits is 11520, while the sum is 31.

Adding to 243241143511 its reverse (115341142342), we get a palindrome (358582285853).

The spelling of 243241143511 in words is "two hundred forty-three billion, two hundred forty-one million, one hundred forty-three thousand, five hundred eleven".